Interior finish construction



Nov. 5, 1929; R. v. PARSONS 1,734,689

INTERIdR FINISH CONSTRUCTION Filed Nov. 5. 1927 It v B D v jab-er o,

jiaynzoni 74 6035697361 Patented Nov. 1929 RAYMONDV. PARSONS, OFCLEVELAND, OHIO, ASSIG-NOR TO JOHNS-MANVILLE COR- PORATION,'OF NEW YORK,N. Y.,

7 A CORPORATION OF NEW YORK INTERIOR FINISH CONSTRUCTION Applicationfiled November 5, 1927. Serial No. 231,276.

My invention relates to buildingconstruc tion; particularly tointerior-finish construction, consists in a new and improved mode ofapplying and sustaining the plaster finish, as to walls and ceilings,and has for objectsthe protection of such finish from checking orcracking, such as usually occurs when the structural supports settleunevenly, and the provision of wall or ceiling finish which shall beeffective both for heat and sound insulation. j

By plasterffas the term is herein used, any originally plastic material,capable of being laid while plastic and setting to solid and rigidconsistency, is included. The high degree of inherent strength andstiffness of all the plastering materials used in building constructionmay not generally be appreciated. The structural adjuncts employedinassociation with plaster, e. g. lathing, of wood, wire-mesh, or expandedmetal, are not so much needed as permanent reinforcements as for meansof suspension in proper place, of the sheet of plaster, which whenhardened by setting is amply strong, mechanically, to sustain not onlyitself but considerable loads. I

In the majority of instances plaster is laid either directly. upon astructural support, such. as hollow tile or masonry, or upon a lathingrigidly secured toandthusforming part of the structuralsupp'ort itself.Almost,

if not quite, without exception, such structural supports are subject toprogressive al terations in position, as when the building set tles, andsuch changes inevitably produce checks and cracks in therigid sheets ofattached plaster. Plaster laid upon such. a support is subject toperiodic changes by thermal expansion and contraction and theinevitable' differences between the plaster and the structural support,as measured by respective coefiicients of-expansion, tend to pro ducechecks and cracks in the plaster.

My invention is diagrammatically illustrated inthe drawings heretoannexed, in which Fig. 1 and Fig. 2 each shows in cross section aportion of a structural support, a plaster facing, and the intermediatestratum which is a salient feature; and is characterized by theemployment of a stratum of material which as a whole is yieldingdistortable internally mobile, and is attached to the structural supportat one side and to the plaster facing atthe other. This stratum may beunitary or composite, its required physical characteristic is that itshall be capable of internal movement to a substantial extent in anydirection parallel to its general surfaces without. rupture and withoutdetachment either from the structural support or the plaster facing, andinherently strong enough to serve as asuspensivesupport for theattachedplaster. The latter characteristic'enables it to hold the plaster facingin its proper relation to the structural support, the former enables itto absorb in its own yielding internally mobile and distortable body thesettling or other, movements of the struc--. tural support and thethermal expansions and contractions of the plaster and the structuralits structural support, it floats, so to speak, on a yieldingdistortable and supple material between itself and the structuralsupport.

- The material ,whichI have found .best suited to the purpose, as ayielding medium support. The plaster facing is thus hung to Y ofsupport, is wool felt or hair felt (:prefer- I ably the latter) whichhas been selfquilted .A- represents "the structural support, B thestratum of yielding material, such as hair felt, in thickness one-halfor three-quartersof an inch;'C,a strong glue or cement, on which thefelt is laid and which secures it adhesively and uniformly ,to thestructural support; D the plaster facing, which, laid while plasticdirectly to the felt layer, intrudes into it,:as

indicated at E'.' The mechanical strength of the felt, its resistance torupture under tene sion, is amply sufficient to sustain the weight ofthe plaster, evenwhen the surface finished -2' i i I 1,734,

therewith is a ceiling. When the plaster facing has set, its owninherent stiffness and strength come into service. Thereafter, anysettling movements of the buildingstructure are accommodated by the feltsupport on which the plaster facing hangs or floats, as are likewiseexpansion or contraction of the plaster finish, and the plaster itselfis thus guarded against cracking or checking; The 7 above describedwall-finish has been tested as follows A needled or punched hair feltlayer,

one-half inch thick was glued to ,a'wooden board-surface, built 7without any diagonal bracing; to the felt layer a facing of plaster,

by 'aglue-layer C, and the plaster layer D, V

penetrating theopen-textured yielding' mate- ,rialat E, and'conformingto-the corrugated orundulating surfacethereof, hasits exposed surfacefinished flat, as usual.

By the mode of constructionfhere illustrated, the plastic layer ismolded with parallel ribs D, which aiford structural stiffness ternallymobile reticular material and a facingof plaster, the said stratumofyielding reticular material secured to, the structuralsupport at onesurface-and to the plaster'at the other by intrusionof the plaster intosaid position with relationto the former.

5. The combination with a structural support, of a stratum of yieldingdistortable, in 7 ternally mobile reticular naterial ,and a fac ing ofplaster, thesaid stratum of yielding reticular material jadhesi'vely'secured to the structural support at one surface and to the plasterattheother b'y intrusion of the plaster into said stratum,- sustainingthelatter in its normal position with relation to the former.

6. The combination with-astructural support, of-a stratum offelted-distorta'ble, in-

ternally mobile fibrous-material and a facing of plaster, thesaidlfelted material-secured to thestructural support at one surface and tothe plaster at the other, sustaining the latter in its normal positionwith relation'to the former.- V 7 Signed by me at New York" NewY0rk,this

second day of November, 192

f BAYMOND V. PARSONS.

' inhig'h degree to'the plaster'layer, Asin'the constructionillustratedin Fig. l here-alsothe yielding material B performs itsfunction as a medium of; securement andsuspens'ion for theplaster layer,and absorbs anydistor-tions of the structuralsupport A, thus preventingthe transmission of stresses tothe stifi plasterlayerD,

I claim:

1'. The" combination f a structural support, a facing of'-pla'ster, anda connector of I l yielding{distortablainternallymobile chari acterbetween the structural support; and

,p laster facing. n. I 7

6-2. The co 'ibination-ofastructural support, stratum ofyieldingdistortablejinternally mobile material, and-a facing of plaster,the i plaster-"facing supported by the said stratum 1 of yieldingmaterial and theflatter in turn 55? supported by-the structural support.

- The: combination -with a structural support, ofa stratum of yielding:distortable, internally mobilematerialand afacing of plas- J 7 ter, thesaid stratum of yielding material se- P so cured tothestructuralsupportat one sur- 1 face and to 1 the plaster at the other, sustaining-the latter. in its normal position with-relation tothe'former. v

' 1-4. 'Thecombination with a structural support, of a stratumofyieldingdistortable, in-' "Tim c V 0 stratum, susta nmg the latter1n=,1t;s normal

